Propeller.



PATENTED OCT. 8, 1907. 0. PETERSON.

PROPELLER. APPLIoATIoN FILED MAY 11, 190e.

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OLE PETERSON, OF DULUTH, MINNESOTA.

PROPELLER.

Specification of Letters Patent.

Patented Oct. 8, 1907.

Application filed May 11,1906. Serial No. 316,350.

To all whomitmay concern:

Be it known that I, OLE PETERSON, a citizen of the United States, residing at Duluth, in the county ,ofY

St. Louis and State of Minnesota, have invented certain new and useful Improvements in Propellers, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to improvements in propellers, and pertains particularly to reversible propellers.

The object of my invention is to provide a propeller wheel which is provided with pivoted blades which are adapted to be oscillated for changing the angle of the blades, whereby the direction of travel of the vessel may be changed without reversing the direction of the driving mechanism.

Another object of my invention is to provide a propeller of this character made of a small number of parts and so arranged that they may be readily assembled and taken apart when occasion demands, and thus producing a more simple, cheap and effective propeller.

A still further object of my invention is to have all the working parts within a housing, and thus lessening the chances of injury to the same.

In the accompanying drawings, Figure 1, is a longitudinal sectional view of my improved propeller, and the shaft connection. Fig. 2, is an end view of the hub with the cap removed, and showing the oscillating means. Fig. 3, is a transverse sectional view taken Fig. 4, is a longitudinal sectional view of my improved propeller taken at right angles to Fig. 1.

Referring now to the drawings, 1 represents the propeller shaft which has its outer end entering a socket in the hub 3, and said shaft is keyed in said socket by a key 4. The socket, as shown, is of a cylindrical solid form, and has its outer end provided with a transverse recess 5 which extends nearly across the entire hub, but leaves the thin walls 6, as will be hereinafter more fully described. The said hub, at its outer end, is also provided `with the transverse semi-circular recesses 7 and 8 which extend outwardly at right angles to the recess 5, and extend entirely through the hub. These recesses form bearings for the shanks of the blades.

The outer end of the recess 5 is provided with inwardly-extending openings 9 and 10 which extend inwardly through the hub 3. The inner end of the hub is provided with an annular flange 11 which is internally screw-threaded at 12 and into which the cap 13 is screwed, as will be hereinafter more fully described. Resting in the openings or recesses 7 and 8 are the shanks 14 and 15 of the propeller blades 16 and 17. The said shanks are provided with crank arms 18 and 19 which are formed integral with the shanks of the blade, and as fully shown in Figs. 1 and 3, extend in opposite directions. The outer ends of said crank arms extend adjacent thc walls 6 of the hub, but are suiliciently distanced therefrom to allow the arms to swing up and down to cause the oscillation of the shanks, and thus allowing the inclination of the propeller blades 16 and 17 to be changed. The recesses 7 and 8, as before described, are semi-circular and of a depthjust equal to half of the diameter of the shanks 14 and 15.,

The outer end of the hub is provided with four openings 20, and resting against said outer end of the hub is a solid cap 21. The said cap is of a size to snugly fit the end of the hub, and thus forms practically a continuation thereof, and at the same time forms an even unbroken surface. The said cap is provided with a transverse recess 22 which corresponds with the recess 5 in the hub, and thus allows the free swinging of the 'crank arms 18 and 19, as shown in dotted lines in Fig. 1. The said cap is also provided with transverse recesses 23 and 24 which extend at right angles to the recess 22, and said recesses are arranged opposite the recesses 7 and 8, and are also semicircular and form the other half of the bearing for the shanks of the propeller blades; The screw-bolts 25 pass through the cap and enter the openings 20 in the hub and firmly secure the cap on the outer end of the hub. This arrangement, as will be clearly seen, forms a smooth continuation of the hub, and protects all of the working parts of the propeller.

Surrounding the shaft 1 is a sleeve or tube 26 which extends within the space 27 formed by the cap 13, and is freely movable upon the .shaft independent of the shaft and cap, the cap serving as a protector for the inner working mechanism. The inner end of the sleeve or tube 26 is provided with a screw-threaded portion 28 upon which is screwed a ring 29. The said r-ing is provided with two outwardly and upwardly extending arms 30 and 3l which pass upwardly through the openings 9 andlO and have their upper ends cut away as indicated at 32. The said cut-away portions as shown in Fig. l, are arranged on opposite sides of the arms to bring the upper ends on the proper side of the crank arms. The extreme upper reduced ends of the arms are provided with inwardly extending studs 33 which pass through the elongated openings 34 in the outer end of the crank arms 18 and 19. i

From the foregoing description, it will be seen that the shaft is stationary; that is, it has no longitudinal movement, but is free to rotate the same as the usual propeller. The blades are set at the angle shown in the ligure, and when it is desired to change the inclination of the blades for changing the direction of the vessel, the sleeve or tube 26 is moved outwardly as indicated in dotted lines, Fig. 4, forcing the arms 30 and 31 outwardly within the hub, and by the connection of said arms with the crank arms of the propeller blades, the `blades are oscillated and the angle of the blades is changed. All Working parts are inclosed and thus protected, and the parts being very simple and few, makes a much cheaper' and mor'e durable propeller of this character'.

Having thus described my invention, What I claim and desire to secure by Letters Patent, is'.m

l. A propeller of the character' descr'ibed, comprising a shaf-t, a hub rigidly secured to the shaft, pi'opeller blades pivotally mounted in said hub, a sleeve sliding on the shaft and extending within the hub and having outwardlyextending arms passing through the hub and oscillating said blades, and a cap carr'ied by the inner' end of the hub and ilush with side walls thereof, and covering the oscillating arms at all times.

2. A propeller of the character descr'ihed, comprising a shaft, a hub rigidly secured to said shaft, propeller blades pivotally mounted in said hub, crank-arms car'r'ied by the propeller blades and extending r'adially outwardly within the hub, a sleeve sur'rounding the shaft, arms secured to the sleeve and passing through openings in the hub and connected to said crank arms, and caps carried by the ends of Asaid huh for inclosing all working parts.

3. A propeller of the character' described, comprising a shaft, a solid hub r'igidly secured to said shaft, pr'opeller' blades mounted in recesses in its outer end, a solid cap secured to the hub and having recesses corresponding with the recesses in the huh and forming therewith the bearings for the blades, blades having their shanks pivotally mounted in the openings formed by the recess, crank arms carr'ied by the shanks and extending outwardly within recesses in the hub, a sleeve slidably mounted upon the shaft, arms carried by the sleeve and extending outwardly through openings in the hub, means for securing the said arms and crank arms together with a limited movement, and a cap soeur-ed to the inner end of the hub and covering the arms carried by the sleeve.

4. A propeller' of the character described, comprising a shaft, a hub rigidly secured to said shaft, propeller blades pivotally mounted in said hub, crank arms carried by the propeller blades and extending within the hub, a sleeve surrounding the shaft, arms carried by the sleeve and secured to the crank arms, an inwardly extending inter nally sere\vthreaded Ilange carried by the hub, and a cap scr'ewed within the tlarige and tlush with the huh, and covering the operating arms.

5. A propeller' olf the character described, comprising a shaft, a hub formed of a solid block o1' metal and rigidly keyed to the shaft, propeller blades pivotally mounted in the outer' end of said hub, said blocks having radially extending rece. s, communicating at their outer ends with longitudinal openings extending through the huh. ci'ank arms cai'ried by the propeller blades and extending outwardly within said rec s, the outer end of said crank ar'in havingl elongated openings therein, a sleeve slidably mounted upon the shatt', ai'iiis rigidly secured to the sleeve and extending tlii'ougli the, openings in the hub,

and later-aily-extending pins carried by the outer ends ot' said arms and entering the elongated openings in the crank arms.

t3. A propeller of the character described, comprising a shaft, a hub formed of a solid block ot' metal and rigidly secured at its inner end to the shaft, the outer end ot' said block having concaved grooves oppositely arranged. and recesses radially arranged at right angles to the grooves. said hub having longitudinal openings communicating with the outer end of said recesses. propeller blades havY ing slianks mounted in the grooves, crank arms married by the slianks and extending within the recess, and thc outer ends of the arms having elongated slots therein, a cap having grooves corresponding with the grooves in the huh. means for securing the cap on the hub, said huh having recesses corresponding with those in the huh to allow the crank arms to swing upwardly, a. sleeve slidably mounted upon the shaft, arms secured to the sleeve and extending through the openings in the hub, laterallyextendi pins cai'r'ied by the outer ends of the ai'iiis and eiitei'iiig the openings in the crank arms, an internally sci-ewalii'eaded flanged portion formed integral with the hul, and a cap screwed within the ilange flush with the hub and covering the operating arms.

In testimony whereof I atlix my signature in presence o1' two witness OLE -llil'l'llistih Witnesses l. Guo. HANsoN, Onu .ToiiNsonn 

